Milking-machine.



L. D. PEIK & W. LEHMAN.

MILKING MACHINE.

APPLICATION FILED APE.13, 1911.

Patented June 20, 1911.

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L. D. PEIK & W. LEHMAN. MILKING MACHINE. APPLICATION FILED APRJS, 1011.

Patented June 20, 1911.

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Patented June 20, 1911.

. s I m M.v n L. L m 4 nnirnn srar L OUIS ID. PEIK AND WERNER LEHMAN, OFSOUTH MILWAUKEE, VVISCOITSIILIT. I

MILKING-MAGHINE.

Specification of Letters Patent. Patented June 20, 1911.

Application filed April 13, 1911. Serial No. 620,726.

zerland, residing at South Milwaukee, in.

the county of Milwaukee and State of Wisconsin, have invented certainnew and useful Improvements in Milking-Machines, of

which the following is a specification, reference being had to theaccompanying drawing, forming a part thereof.

The main objects of this invention are to reduce the labor and expeditethe operation of milking; to imitate in the operation of a milkingmachine the action of a calf in sucking and thus avoid injury anddiscomfort to cows; to enable a single operator to milk two cows at thesame time; to produce an easily operated and thoroughly sanitary machinehaving few and simple working parts which can be readily detached,removed, scolded, cleaned and replaced; and generally to imprwe theconstruction and operation of machines of this class.

it consists in the construction, arrange ment and combination of partsas hereinafter particularly described and defined in the claims.

In the accoin )an in drawin like charactors designate the same parts inthe several figures.

Figure l is a side elevation of a machine embodying the invention; Fig.2 is a plan view of the same; Fig. 3 is a vertical cross section on theline 3 3, Fig. 2; Fig. 4.- is an enlarged vertical cross section on theline 4 i, Fig. 1, showing the manner of detachably mounting the pumpcylinders on the frame; Fig. 5 is an enlarged section of a junction casefor connecting several teat cups with a single, hose; Figs. 6 and 7 areenlarged sectional views of teat cups and sight glasses for teats ofdiii'erent sizes; Fig. 8 is an enlarged vertical longitudinal section ofone of the pump cylinders and pistons; Fig. 9 is a plan view of the sameand horizontal section on the line;9 9, Fig. 8;

and Fig. 10 is a vertical. cross section on the line 10 10, Fig. 9.

Referring to Figs. 1, 2 and 3 of the drawing, a light portablefraine a,which may be conveniently constructed, 'as shown, of a channel or anglemetal'bar', is mounted adjacent to one end upon wheels I), and provided. adjacent to the other end with legs 0,

so that it can be easily moved with the ,ap-'

paratus and attachments mounted thereon;

from place to place, like a. wheelbarrow or two-wheeled truck. Standardsor uprights d and e fastened at their lower ends to the sides of theframe a, are connected at their bars or plates 9' and k.

Two pump cylindersz' formed with hangers j, are suspended parallel witheach other and the sides of the frame a by the hangers y from the bars fand the cross bar or plate g, to which they are detachably fastened,'as

upper ends by longitudinal bars f and cross I enrich.

shown in Fig. 4, by a cross rod passing through depending flanges orwebs on the bar or plate g and sleeves Z of the hangers j and threadedand provided with nuts m at its ends. Each cylinder is formed or pro-'vided at one end, mainly below the lower side thereof, with a dischargespout or vacuum chest a, as shown in detail in Figs. 8, 9 and 10. Thisspout or chest is inclined downwardly from the cylinder with which itcommunicates at its upper end and is provided'at its opposite and lowerend with an outwardly opening discharge valve 0 hinged to the upper sidethereof by an elbow shapcd arm p, as shown in Figs. 8 and 9. A latch ordetent g pivoted to the upper side of the spout or chest at is adaptedwhen turned down, as indicated b dotted lines on 8, to engage with t eendof the arm 79 and hold the discharge valve 0 open, thereby renderingthe associated pump inoperative. Each spout orchost n is formed as shownin F 9 and 10, with a lateral inlet opening in which is removably fittedan outwardly flanged tubular suction connection 0', which is secured inplace in'said ed on a flange, or extension t of said 'spout' or chestaround said inlet opening. At its .spout or chest at and the directionof the discharge flow of milk therein. The outer end of the spout orchest 1:. against which the discharge valve 0 is seated, and the innerend of, the tubular suction connection against which the suction valve21 is seated,

are inclined or oblique to vertical planes cut ting the hinges of thevalves lengthwise, so

. opposite the spout or chest n, and is r0- vided with'a piston w whichis-connect by a rod 3/ passing through the open end of the cylinder withthe upper end of a vertical lever z. The two levers z are fulcrumed orpivoted, as shown in Fig. l, on parallel cross rods 2, which aresupported at the ends by the standards or uprights d, as shown in Fi 3.At' their lower ends they are provi ed with pedals 3 and they areconnected concentric with their fulcrums, as shown in Fig. 1, by segmentgears 4, so that as one pedal is pushed forward, the other pedal will bepushed backward, and the pistons 01; will be simultaneously moved inopposite directions.

Each suction hose'u is attached as shown in Fig. 3, to a junction case5, shown in detail in Fig. 5, and each junction case is connected byfour rubber tubes 6 with sight glasses and elastic teat cups for milkinga single cow. The tubes 6 are each provi ed as shown in Fig. 1, withclamps .7 for sepa rately closing communication between the several teaton s and the pump, so that when any teat is mil ed dry, the en thereonmay be cut oil from the pump anc thus prevent injury to the cow withoutinterri )tin the operation of the other cups. Two iflerent forms ofsight glasses 8 8 and two different forms of teat cups, 9 9, to fitteats of different shapes and sizes, are shown in Figs. 6 and 7, thecups as well as the glasses being interchangeable.

Separate cans or receptacles 10, provided with hooded covers 11areprovided for the ,two pumps, so that the milk from different cows canbe kept separate. These cans are removably supported upon cross piecesof the it'rame a, as shown in Figs. 1,2 and 3. A seat l2 for theoperator, is adj ustabl y tastened. by bolts 13 to the side piecesof'the frame, so that it can be moved toward or from the pedals 3accordingto the length of the operators legs. The cross bar or plate itis formed at the ends as shown in Fig. 3,

vinto hooks 15 upon which the teat cups and their hose connections arehung when not in use.

i In the operation of the machine, it is placed between two cows withthe back of the seat directed toward their heads. The teat cups 9 beingplaced on the teats of the cows, the operator occupying the seat 12,works the pedals 3 with his feet back and forth, his hands being leftfree to manipulate the udders of the cows and to control the operationof the pumps on each cow, as

,back and forth drawing air into and discharging it from the spout orchest n, without effect in the hose a and teat cups connectedtherewith.When any teat of a cow is milked dry before the others, the clamp 7 onthe tube leading to the cup on that teat is closed, thereby relievingthe teat from further suction.

In the operation of each pump, as the piston is withdrawn toward theopen end of the cylinder, the discharge valve 0 being closed, a partialvacuum is formed in the spout or chest 72 and the suction valve 1) isthereby opened and a partial vacuum is created in each of the teat cupswhich are in open communication with the pump. Upon the return stroke ofthe piston the vacuum in the spout or chest 17, is destroyed, thedischarge valve 0 is opened and lhe milk contained in said spout orchest is delivered into the can 10. As the milk flowing in its dischargefrom the spout or chest a passes the suction valve '0 edgewise thereof,and said valve moves in closing transversely to the discharge flow ofthe milk, its movement in closing elilectedby gravity, will be gradualand somewhat retarded, thereby permitting a small amount of milk withair to flow back into the suction connection 1'. In this way anintermittent suction or pulstating eflect is produced in the milk cupsupon the teats of the cow, similar to the natural action of a calf insucking. This in termittent action or pulsating effect of the pump isincreased by the back flow of air thrmigh the bypass 14 in the suctionvalve a when it is closed during the discharge stroke of the piston.

The sight glasses 8 enable the operator to detect bloody or colored milkflowing from any teat and to instantly cut that teat off from the pumpby closingthe clamp 7 Various changes in the minor details ofconstruction and arrangement of parts may be made without materiallyaffecting the operation of the machine and without departure from theprinciple and scope of the in vention;

We claim:

' 1. In a milking machine the combination of a carriage or portableframe, a horizontally disposed pump cylinder mounted there- .on andhavingsuction and discharge connections and valves ad'acent to one end,a piston fitted in said cylinder and vertically 7 2o fulcrumed '30 andprovided at one on ceases disposed intergeared foot levers fulcrumed,

in said frame and adapted to swing simultaneously in oppositedirections, one of said levers being connected at its upper end with 5said piston. 2. In a milking machine the combination ofa portable frame,horizontally disposed pump cylinders mounted on said frame parallel witheach other and each provided at to one end with suction and-dischargeconnections and valves, pistons fitted in said cylinders, and verticallydisposed intergeared foot levers fulcrumed in said frame and connec'tedat their upper endswith said pistons.

3. In a milking machine the combination of a frame, a horizontallydisposed cylinder mountedthereon and provided with a piston and withsuction and discharge connec-- tions and valves, verticallydisposedlevers in said frame and intergea-red to swing simultaneously inopposite directions,

said levers ends with pedals and one of them being connected at itsupper end with said piston, and

a seat ounted on said frame and adjustable towar and from said levers.

4. In a milking machine the combination I of'a portable frame, ahorizontally disposed v.pump cylinder removabl mounted thereon withsuction and discharge connections and valves, the other end of thecylinder being open, a piston fitted in said cylinder, verticallydisposed intergearcd foot levers fulcrumed in said frame and provided attheir lower ends with pedals, one of said levers being connected withsaid piston by a rod passing through the open end of the cylinder, and aseat mounted on said frame.

In a milking machine the combination of a pump cylinder havinga'discharge spout at one end, an outwardly opening discharge valve atthe end of said spout, a lateral suction connection opening into saiddiscl'iargc spout, and an inwardly opening suction valve at the innerend of said connection movable 1n opening and closing transversely beingprovided at their lower to the discharge flow of milk through saidspout.

6. In a milking machine the combination of a pump cylinder having adischarge spout at one end, an outwardly openingdischarge valve at theouter end of tubular suction connection removably fitted and secured ina lateral opening in said spout andprovided at its inner end with asuction valve movable in opening and closing transversely tothedischarge flow of milk in said spout. Y

7. In a milking machine the combination of a pump cylinder having adischarge "pout at one end, an outwardly opening discharge valve at theouter end of said spout, a suction connection opening into saiddischarge spout and having an inwardly opening suction valve, and areturn bypass from the discharge spout into the suction connection.

8. In a milking machine the combination of a pump cylinder having adischarge spout at one end provided with an outwardly opening dischargevalve, a suction connection opening provided with an-inwardly openingsuction valve, and means for. locking and holding the discharge valveopen.

9. In a milking machine the combination of a pump cylinder provided witha piston and having-a receiver and discharge spout at one end and mainlybelow the cylinder, a self closing, outwardly opening Valve controllingthe discharge opening of said receiver and discharge spout and a suctionconcharge spout and provided with a self closing, inwardly opening valvecontrolling the inlet to said receiver and discharge spout.

In witness whereof we hereto affix our l signatures in presence of twowitnesses.

LDUIS I). PEIK. WERNER LEIIMAN.

Witnesses H. J. Cimsick, R. S. Pon'rnic said spout, and a into saiddischarge spout and' nection opening into said receiver and dis- 7

